KeepRite Refrigeration KEZA050H8 scroll condensing unit (Copeland ZB38KCE, R448A) — modelled

Modelled from the manufacturer's published data — not verified by KeepRite Refrigeration. Source: KeepRite KEZ Generation D product manual, part 1108861 (March 2026, docs.k-rp.com) — KEZA050H8's selection-capacity tables: Btu/h against saturated suction temperature and ambient from 85 to 110 °F on every refrigerant it is printed on, the Copeland ZB38KCE named beside them (docs/keeprite-condensing-units-source.json). The figures below come from this model run against that data; the manufacturer has not reviewed them. Are you KeepRite Refrigeration? Claim this page.

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KeepRite's KEZA050H8, a one-fan air-cooled scroll condensing unit for walk-in coolers and small cases, as this model runs it: the Copeland ZB38KCE its manual names — the catalog's own map — on R448A, an air-cooled condenser on the cabinet's face, its fins louvered for the enhanced tube and fin the manual names, and the 400 W fan that draws air through it. The condenser's airflow is the one figure fitted, on the manual's R404A cell nearest AHRI 1250's rating point (25 °F suction on a 95 °F day, 43 400 Btu/h), and it stands for the condenser's conductance, not for air: the 4 280 cfm it comes to takes about twice the air power the printed fan could give through that coil, so the fan could not move it — read at the compressor's own rating basis, the tables ask more of the condenser than this model's coil gives behind that fan. That same condenser holds all 214 cells the manual prints for this unit on R404A, R407A, R448A and R407C within −5.1 to +6.7 % (RMS 2.5 %). At 25 °F suction on a 95 °F day it gives 12.68 kW on R448A, against the 44 100 Btu/h (12.92 kW) printed. Modelled from the maker's published data — not verified by the manufacturer. Published as an example; the figures below are solved from this model.

Example10–16 kW coolingNA

Example system. Published by HVAC Builder to show suppliers what their own page looks like. There is no company behind it and it is not a product offer — the specification is generic and the performance is solved from the model on this page.

Design-point performance

12.7 kWcooling
5.2 kWelectrical power
2.43system COP

Solved from this example's own model as it is published — the same numbers a supplier's page shows for their machine.

Component schedule

ComponentKindDuty
Copeland ZB38KCE (R448A)Compressor4.8 kW
Air-cooled condenser (chassis 3)Condenser-17.2 kW
Condenser fan (400 W)Fan-0.4 kW

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